引通济安深埋隧洞穿越北川—映秀断裂工程地质问题分析  

Analysis of Engineering Geological Problem Caused by Yintongji’an Deep Tunnel Through the Beichuan-Yingxiu Fault

作　　者：徐复兴[1] 练操[1] 朱萌[1] XU Fuxing;LIAN Cao;ZHU Meng(Changjiang Institute of Survey Technical Research MWR,Wuhan,Hubei 430011,China)

机构地区：[1]水利部长江勘测技术研究所

出　　处：《水利与建筑工程学报》2019年第3期104-108,共5页Journal of Water Resources and Architectural Engineering

基　　金：国家重点研发计划项目(2018YFC1508602)

摘　　要：引通济安工程引水隧洞穿越北川-映秀断裂,该断裂为活动断裂,历史上曾发生过2008年汶川8.0级大地震,对引水隧洞的稳定性有直接影响。为确保工程抗震设计的科学性和工程运行的安全性,通过分析工程区内北川-映秀断裂的分布、性状及地应力特征,提出了断层极端工况下粘滑位错量与断层未来百年蠕滑量,为分析评价隧洞工程稳定性及抗断处理提供了依据,为本区及邻区类似地下工程的开展提供了参考。The diversion tunnel of Yintongji’an project passes through the Beichuan-Yingxiu Fault. The fault is an active fault sincethe Wenchuan 8.0 earthquake occurred in 2008. It has a direct impact on the stability of this project. In order to ensure the scientific nature of engineering seismic design and the safety of engineering operation, by analyzing the distribution, characters and stress characteristics of the Beichuan-Yingxiu fault in the engineering area, we proposed a method to calculate the amount of the slip dislocation and the fault’s future centennial creep slip. This study can provide basis for the analysis and evaluation of the stability of tunnel engineering and the design of anti-fault treatment, and provide reference for the development of similar underground engineering in this area and adjacent areas.

关 键 词：北川-映秀断裂 深埋隧洞 地应力分析 

分 类 号：TV221[水利工程—水工结构工程]